Home / 13,321.38-18,388.77-8,015.16

Finding the Fourth Proportional to 13,321.38, 18,388.77 and 8,015.16

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Solution

The fourth proportional to 13,321.38, 18,388.77 and 8,015.16 is: 11,064.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.38 : 18,388.77 = 8,015.16 : x
  2. Step 2: Convert to fraction form
    13,321.38/18,388.77 = 8,015.16/x
  3. Step 3: Cross multiply
    13,321.38x = 18,388.77 × 8,015.16
  4. Step 4: Simplify right side
    13,321.38x = 147,388,933.75
  5. Step 5: Solve for x
    x = 147,388,933.75/13,321.38
  6. Step 6: Final answer
    x = 11,064.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.